Stand-In for Passers-By

When Chen Xiao, who looked exactly like his best friend, was forced to start the "Identity Replacement Plan" during the summer vacation of 2003, he thought he was just helping his roommate deal with his family. Unexpectedly, when he opened the door of the Ling family, what was waiting for him was not the brother he expected, but his sister Ling Wei, who had a cold temperament. During the days when he was pretending to be Ling Cheng, he not only had to be wary of his sister's keen insight, but also had to deal with the sudden appearance of a girl from his class. He even unexpectedly reunited with Ling Wei in the library. At the same time, the subtle attitudes of childhood sweetheart Xia Muxue and her parents make this summer full of variables. When a management major senses business opportunities in the era of the rise of the Internet, and when the figures of several girls intersect in his life, how will this summer adventure, full of lies and throbbing, rewrite the trajectory of his life?